Unformatted text preview: 6. Which parts of the respiratory system function as the main sites of gas exchange? alveoli 7. The smallest subdivisions of the lung visible with the naked eye are the _____________, which appear to be connected by black carbon in smokers. lobules 8. Which of the following are the two main functions of the larynx. To provide a patent airway; to act as a switching mechanism to route air and food into the proper channels. 9. Which of the following represents all of the processes involved in respiration in the correct order? Pulmonary ventilation; External respiration; Transport of respiratory gases; Internal respiration;...
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- Spring '11